ReGBA (Alpha 12) (GBA emu for GCWZ)

ReGBA by Nebuleon is a Game Boy Advance emulator based ultimately on gpSP 0.9 by Exophase. The project is currently in alpha. This build is a preview for your consideration. Some features are missing and will be coded later. You can also submit patches on GitHub.
Release notes:

I have revalidated the optimisations, and it turns out I used the wrong register in some GCW-specific code. I have fixed this, resulting in ReGBA/GCW0 alpha 12. Up to 4% of performance has been restored.
Download: https://dl.dropboxusercontent.com/u/...a-alpha-12.opk
Dingoo A320 users don’t need this; they can continue using alpha 10. Alphas 10, 11 and 12 will be byte-identical on the Dingoo A320.
The last commit that went into this build is commit dc526d2: “GCW Zero, mips/stub.S: Correct the MIPS32 R2 instructions. The instructions used the wrong register.”.